CVE-2026-5172
Title: Buffer Overflow (Heap Out-of-Bounds Read) in dnsmasq
Memory Corruption
Proof Of Concept
PoC Available for CVE-2026-5172
CWE Category
NVD-CWE-noinfo
Published Date
May 11, 2026
Modified Date
May 13, 2026
Exploit Status
Available
Score
7.3
CVSS v
Exploit Probability (EPSS)
0.61%
Vulnerability Summary
CVE-2026-5172: A buffer overflow in dnsmasq’s extract_addresses() function allows an attacker to trigger a heap out-of-bounds read and crash by exploiting a malformed DNS response, enabling extract_name() to advance the pointer past the record’s end.
Impacted Vendors
Analysis in Progress...
Reference Links
CVSS v3.1
Source Entity
134c704f-9b21-4f2e-91b3-4a467353bcc0
Severity
HIGH
7.3
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Associated Attack Patterns (CAPEC)
Total: PatternsNo specific attack patterns mapped.
Likelihood
Severity
Page /
CVE-2026-5172 Exploits & PoCs (Proof Of Concept)
GitHub
https://github.com/lottiedeyan/CVE20265172poc
MODIFIED
Vulnerability data updated via NVD.
MODIFIED
Vulnerability data updated via NVD.
MODIFIED
Vulnerability data updated via NVD.
MODIFIED
Vulnerability data updated via NVD.
MODIFIED
Vulnerability data updated via NVD.
MODIFIED
Vulnerability data updated via NVD.
Attack Vector Matrix
Access Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
CVSS Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Affected Stack
No specific products linked.